Swiggy Senior Devops Engineer Interview Questions and Answers for Experienced

Q1. Insert node in BST
Ans. 
Insert a node in a Binary Search Tree (BST)
• Start at the root node and compare the value of the node to be inserted with the current node

• If the value is less than the current node, move to the left child. If greater, move to the right child

• Repeat the process until reaching a leaf node, then insert the new node as a left or right child
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Q2. Design Lift system
Ans. 
Design a lift system for efficient vertical transportation
• Consider the number of floors in the building

• Include safety features like emergency stop button

• Optimize for speed and energy efficiency

• Implement a user-friendly interface for passengers
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Q1. Low Level Design for Chess
Ans. 
Low level design for a chess game including classes, functions, and data structures.
• Create classes for pieces (e.g. Pawn, Rook, Bishop) with properties like position and color

• Implement functions for moving pieces, checking valid moves, and capturing opponent pieces

• Use data structures like 2D arrays to represent the chess board and track piece positions
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Q1. Design Splitwise Application (LLD)
Ans. 
Design a Splitwise application for managing shared expenses among friends.
• Implement user authentication and authorization for secure access.

• Create a user-friendly interface for adding expenses and splitting them among friends.

• Develop algorithms for calculating balances and settling debts between users.

• Include features for adding comments, attaching receipts, and generating reports.

• Consider scalability and performance o...read more
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DSA, 1 hour with 2 LC medium questions

Q1. Low level design
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Q2. Design lld for Dream 11
Ans. 
Designing the low-level design for Dream 11 platform.
• Use microservices architecture for scalability and flexibility.

• Implement a robust database schema to handle large amounts of user data.

• Utilize caching mechanisms to improve performance, especially during peak usage times.

• Include authentication and authorization mechanisms to ensure data security.

• Design APIs for seamless integration with third-party services.

• Implement...read more
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Q1. High level design
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Q2. Design HLD for rider management system
Ans. 
Design HLD for rider management system
• Use microservices architecture for scalability and flexibility

• Implement user authentication and authorization for security

• Include features like ride tracking, payment processing, and feedback system

• Utilize databases for storing rider information and ride history
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Two medium DSA questions based on strings.

Q1. Design Google Meet
Ans. 
Design a video conferencing platform similar to Google Meet.
• Implement real-time video and audio streaming

• Include features like screen sharing, chat, and participant management

• Ensure scalability to support large number of users

• Focus on security and privacy measures

• Optimize for low latency and high quality video/audio
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Q1. Design LLD of google calendar
Ans. 
Design LLD of google calendar
• Use microservices architecture for scalability and maintainability

• Implement features like event creation, editing, deletion, reminders, and sharing

• Utilize databases for storing user data and events

• Include user authentication and authorization for security

• Integrate with external APIs for syncing with other calendars
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Q1. Design Booking Management System
Ans. 
Design a Booking Management System for handling reservations and scheduling.
• Create a user-friendly interface for customers to make bookings

• Implement a database to store booking information

• Include features for managing availability, cancellations, and payments
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